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Within-day replanning of exceptional events
(2011)Arbeitsberichte Verkehrs- und RaumplanungTypical software that is used for the simulation of traffic behavior focuses on scenarios that describe common situations like an ordinary working day without remarkable incidents. To simulate such scenarios, iterative approaches are used. They assume that the simulated people adapt to the results of the previous iterations. Such iterative approaches produce meaningful results for various scenarios as long as only typical, repetitive ...Working Paper -
Modeling household fleet choice as a function of fuel price using a multiple discrete-continuous choice model
(2011)Arbeitsberichte Verkehrs- und RaumplanungIn this Paper, a new model of fleet choice for households is presented that uses the multiple discrete-continuous extreme value (MDCEV) model as a framework. The aim of the model is to establish a model to allocate car types to activity based microscopic agent based transport simulations. What is new in the presented model, is that in addition to socioeconomic attributes of households, the choice is also influenced by fuel price. To model ...Working Paper -
Estimation of carsharing demand using an activity-based microsimulation approach
(2011)Arbeitsberichte Verkehrs- und RaumplanungWorking Paper -
High-resolution destination choice in agent-based demand models
(2011)Arbeitsberichte Verkehrs- und RaumplanungThis paper describes the modeling of destination choices for discretionary activities in a multiagent transport simulation, using MATSim as an example. MATSim is based on utility maximization and its utility function has always been deterministic. Unobserved heterogeneity is now added to the utility function through a random error term, meaning that MATSim is now fully compatible with discrete choice theory. Real-world simulation results ...Working Paper -
How to model the gains from infrastructure investment?
(2011)Arbeitsberichte Verkehrs- und RaumplanungThis paper is a reply to Metz recent book (2008), in which he pointed out, that current costbenefit practise assumes that short-term gains provide a full picture of the gains from investment. It is also an attempt to sketch the model, which is needed to give the decision makers an idea of the long term impacts of the their short term choices. This would help to avoid overly myopic decisions.<br/>The paper sketches a thought model of how ...Working Paper -
Influence of parking on location and mode choice
(2011)Arbeitsberichte Verkehrs- und RaumplanungThis paper assesses the effects of parking availability on behavioral responses by travelers, and which approaches are appropriate for modeling those responses. In addition to the well-known trade-offs between travel times and fuel or transit ticket costs, parking search times and costs have a significant impact on travelers’ decisions. A stated choice study of parking, location, and mode choice was conducted to assess those choices. The ...Working Paper -
Interdependencies between turning points in life and long-term mobility decisions
(2011)Arbeitsberichte Verkehrs- und RaumplanungTurning points in life include important personal and familial events as well as changes in the places of residence, education and employment. The latter usually involve alterations in the spatial distribution of activities and, hence, in the activity space, thereby also influencing the daily travel behavior. In this context, the ownership of mobility tools, such as cars and different public transport season tickets, also plays an important ...Working Paper -
Design and implementation of a parallel queue-based traffic flow simulation
(2011)Arbeitsberichte Verkehrs- und RaumplanungToday, agent based micro-simulations are widely used in the field of transport planning and traffic management. One important requirement is the ability to simulate large scale scenarios in reasonable time. An obvious approach to reduce the computation time of such scenarios is to use multiple CPU cores. This paper presents the implementation of a parallel queue simulation for MATSim written in Java. Existing parallel traffic micro-simulations ...Working Paper -
Effects and side effects
(2011)Arbeitsberichte Verkehrs- und RaumplanungThis paper investigates effects of different possible options for cantonal and municipal au-thorities’ intent on attracting firms: improvements in transport infrastructure, designation of new building zones, and last but not least tax reductions. These actions have been tested by simulating the decisions of existing firms. The parameters for these simulations have been estimated with a discrete choice model using data of the commercial ...Working Paper -
Computational challenges for integrated micro-simulation models
(2011)Arbeitsberichte Verkehrs- und RaumplanungThis paper discusses the current challenges faced by large-scale agent-based approaches to transport modelling. It highlights a number of inconsistencies in modelling practice, which the field should address.Working Paper